I have been looking for original Insta360 One R case and I found this. It is a bit costly but the quality is top notch. Also, I compared and on this website they are offering the best price. Go for it.
Insta360 ONE R Carry Case
Inadequate for accessories
The carry case is suitable for the standard camera kit, however it cannot accommodate accessories like selfie stick, mounting kits etc. The quality of the case is very good.